Question

Prove that the points A (3, 1 ), B(-12, -2 )and C(0,2 )cannot be the vertices of a triangle

Answer 1

hope it's helpful :-)

Answer 2

Answer:

I'll say another easier method.

A=3i+j

B=-12i-2j

C=2j

AB= B-A= -15i-3j

BC= C-B= 12i+4j

AC= C-A= -3i+j

Since,

AB+BC=AC

The given points A,B,C are collinear.

Implies, they do not form vertices of a triangle.